What is Tri-Metal construction?

Tri-Metal bearings have three distinct layers: a steel backing for strength, a middle layer for embeddability and shock absorption, and a final overlay for wear resistance. This design is well-suited for the demands of modern engines.

Do these bearings come with new hardware?

This set includes the main bearings themselves. You will need to reuse your original main cap bolts or purchase new ones separately, as they are not included with the bearings.

What is the importance of oil clearance?

Oil clearance is the small gap between the crankshaft journal and the bearing. It's essential for allowing a thin film of oil to lubricate the surfaces, reducing friction and wear. Too little or too much clearance can cause engine damage.

Specifications

Brand: ACL
Part #: 5M7298-20

ACL TRIMETAL - Chevrolet V8 4.8/5.3/5.7/6.0L Gen III 1997-on Engine Crankshaft Main Bearing Set

Name: ACL TRIMETAL - Chevrolet V8 4.8/5.3/5.7/6.0L Gen III 1997-on Engine Crankshaft Main Bearing Set
Brand: ACL
SKU: acl-acl-trimetal-chevrolet-v8-4-8-5-3-5-7-6-0l-gen-iii-1997-on-engine-crankshaft-t14-631270
Price: 67.64 USD
Availability: BackOrder

$67.64

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

ACL Tri-Metal main bearings for Chevy Gen III V8s. Built for durability and proper oil clearance.

Key Features

Tri-Metal construction — Three layers of material for strength and wear resistance.
Proper oil clearance — Helps ensure your crankshaft spins freely with adequate lubrication.
Direct fit for Gen III Chevy V8s — Designed for 4.8L, 5.3L, 5.7L, and 6.0L engines from 1997 onwards.